Biggest thing for me is the resolution. The TX only has 320x480 versus the Nokia 770's 800x480. Really need that have a top notch web browser.

Besides, I prefer Linux over the new Palm Garnet OS. I'm guessing there's a deep bench of developers ready to write/adapt less expensive/open source Linux progs. There seems to be a declining Palm programmer base and possibly even fewer who will program for Garnet.